Mining machine



' March 5,- 1929.

M. P. HOLMES MINING MA CHINE Original Filed Dec. 19, 1924 s sheets-sheet 1 M. P. HOLMES MINING March 5, 1929 MACHINE Original Filed Dec. 19, 1924 3 $h'qets sheet March 5, 1 929. HOLMES 1,704,669

MINING momma I Original Filed Dec. 19, 1924 3 she t s t 3 I IIIIIJHII: 1

Patented Mar. 5, 1929.

warren stares Monnrs Pi Homers, or CLAREMONT, NEW HAMPSHIRE, ASSIGNOR To SULLIVAN lul CHINERY COMPANY, A oonronariolv or messaonusn rrs.

MINING MACHINE.

Application filed December 19, 1924, Serial No. 757,031. Renewed April 12; 1928.

An object of my invention is to providean improved m ning machine. A further object of my invention is to provide a mining ma chine of improved and very compact con r3 still further object of my invention to 7 provide in-improved mining machine oi the invertible type adapted to operate selectively as an overcui'ter or an undercutter. Still another object of my invention is to provide an improved self-propelled flexibly l ed mining machine having improved va blo speed l1u mis ion mechanism between the driving motor and the feed operating 'n'iember. 'i l'iGHG' d other objects and advantages o't i i Q wil however, "l'iereinafter more fully appear. 7 p

In the accompanying drawings 1 have own for purposes of illustration one emside'elevation of the machine e mach ne frame away to facilitate illustration.

extending, developed sectional view n the improved feeding mechanism, being talvten substantially on line igs. 1 and 1-.

is a transverse vertical sectional. view sub-itani'eially on line 1 5 is a detail view of a modified form t the change speec s. 1

7 r) is deta view partially in section rlion of the feed clutch controlling i =nisni.

Fig. 7 is a detail sectional view taken sub stantially on line 7 of Fig. 1 through the My invention relates to mining machines.

odinient which my invention may assume in '2..practice. I I

7 machine frame 1 is an enlarged vertical; longitudi-' feed controlling handle and its cooperating parts. a I V V r V ,Fig. 8 is a vertical longitudinally extending view through the cutter chain'driving mechanism illustrating my improved controlling clutch theview being taken substantially on line 8+8 of Fig. 1. 1 v

Fig. 9 is a transverse vertical sectional View through the clutch operating mechanism taken substantially on line '9'9 oiFigs. 2 and 8.

Fig. 10 is an enlargedend,elevation of the feeding end of the machine. 7

Fig. 11 is detail view of a portion of the cutter chain clutch controllingmechanism.

In this illustrative construction I have shown my invention incorporated in a mining machine of the electric driven,seltpropelled, flexibly fed longwall type adapted to slide on its bottom on the mine bottom and having an invertible elongated frame 1 presenting parallel plane surfaces Zand 3 upon which the machine is selectively adapted to slide during operation, that is, when the machine is being used an'undercutter'or an overcutter. T he machine frame 1 carries'at one end, a horizon- V ital cutter bar 4 provided with the usual end? 1 less cutter bit carrying cutter chain 5, the bar being pivoted on a vertical axis, as at 6, on the rear end of the frame. The mining machine is herein also adapted to be moved longitudinally along the face of the coal relative to a. flexible ii'eeding means of any suitable "form,

icsgherein including-a lexible feeding member or chain 7 adaptedto cooperatewit-h a feed op-V erating member or chain sprocket 8 rotatable on a longitudinally extending horizontal axis v on the front endof the machine frame 1.; The further comprises motor. section 9, acutting mechanism carrying section 10 and a feed section 11 and these sections are rigidly seciu'ed'together in any suitable manner, the motor section 9 being interr posed between the cutter carrying section 10 and the feed section 11, in a: welljknown manner. I 7 In my improved construction it will be observedthat'the motor casing 9 houses an electric driving motor 12, herein of the usual r ,versible type, provided with a horizontally disposed, longitudinally extending armature shaft 13. In specifically describingmyimproved cutter chain driving mechanism it will be noted that the rear end the armature shaft 13 has suitably secured theretof as by a key and nut and washer connection 14, a spur pinion 15, journaledin a bearing 16 Within the frame section 9. As illustrated,

the pinion 15 is internally bored, as at 17, to receive a ball bearing'18 within which, and.

a bearing 19 carried by the frame section 10, a shaft 20 is 'journaled disposed coaxial with the armature shaft 13. The shaft 20 has secured thereto, as by a key 21, a spur gear 22 disposed coa-Xially with the armature shaft and which gear is adapted to be connected, by means of an'internal coaxial shipper gear 23, in driving relation with the pinion 15. The shipper gear is adapted to be actuated lon- I gitudin ally by means of a shipper yoke 24, in

the form of a bell-crank, pivoted at 25 on the machine frame section 10 and provided with arms 26'and'27 adapted to cooperate with the shipper gear 23 and a bifurcated member 28,

respectively. The bifurcated member 28' is adapted to engage a vert al pin 29 upon the arm 27 and is suitably carried by a cylindrical member 30 slidably mounted within a sleeve 31 mounted within a transversely disposed bore 32 formed in the side of the frame sec- Y tion 10.. Moreover, the sleeve 31 has secured thereto, as by radially extending studs 33, an

, operating member or grasping portion 34 and one of the studs 33 is provided with an inwardlyprojecting portion 35 adapted to co operate with a cam slot 36 formed within the member 30. urtliermoi'e, the member 30 is provided with an upstanding portion'ii'? having secured, as at 38, within its upper end a transversely disposed'rod 39-which is in turn secured at its opposite end, as by a screw 40, within the upper upstanding portion formed on a cylindrical member 41 similar to the member 30, the meinber 4l being slidably disposed withina cylindrical sleeve 42 rotatably mounted within a bore 48 coaxial with thebore 32 and formed on the opposite side of the frame section. The sleeve 42 has likewise secured thereto a grasping portion 44 as by radially disposed studs 45. It will thus be seen that the operator may operate the clutch from either side of the machine by transposition of the stud having the projecting cam slot engaging portion 35. It will herein be noted that by rotating either of the members 24- or 44 the member 30, the rod. 89, p

and the member 41 will slide transversely of the machine relative to. the sleeves 31 and 42 and the shipper yoke 24 is consequently swung about its pivot 25, thus connecting or lDOClHIHlFflD, to be her 7 '1 I 1 slow speed in one direction and at a fast speed the gear 56 suita secured thereto, at its lower end, a usual sprocket 52 adapted to cooperate with and drive the cutter chain 5, in a well known manner. r j i I In my improved feeding mechanism it will herein he observed that the forward end of the armature shaft 13 is journaled within bearings 58 within the frame section 9 and has secured thereto, as by a key and nut. and

washer onnection 54, a. driving pinion 55 1 I which is adapted to drive the feed operating member 8 through improved in an opposite or reverse direction. In s1 ecii'icallyconsidering the fast feed mechanism it will be noted that the p nion 55 meshes with. a spur gear 56 keyed to 'a horizontal. longitudinally disposed shaft 57 Journa'led in suitable bearings 58 carried by a ring section 59 rece vable in a co responding longitudinally disposed and centrally located bore 60" extending throughout the length of. he frame sect-ion ll. i g section 59 is adapted to be inserted or removed lon itudinall i from the rear end of he frame section 11 and has herein, prciierably a cut away portion 61 to, permit free rotation of'the gear 56, a web portion 62 in which one of the bearings 58 is carried, and a hub portion 63 in which a bearinr 64 for one end of a lon 'itudinallv disposed horizontal main feed driving shown, the shatt h? and ily located relative to the bearings 58 by suitable l airing-washers and the shaft has one end projecting from one 65 is supported. A.

bearing and carrying pinion 6G thereon which in turn meshes with a larger internal gear (37. the pinion and bearing being leld in assembled relation by a suitable bolt co n nection'68. The hub 69 of the gear 67 is herein also journaled on a suitable bearing sleeve 70 on a. sleeve clutch member 71 l ed as at 72, to the shaft 65. lvloreover, it will be noted that the ineinher 71 carries series of friction disks 73 surrounding the member 7 and disposed Within a sleeve on the internal gear 67, which disks'cooperate with a corresponding series of disks 75 carried by the sleeve on the internal gear. As shown, the sleeve on the internal gear is also provided with a plurality of radially located longitiulinally'extending slots 76 receiving radial tiugers 77 on an interlocking member 7 8 keyed to a pinion 79 which is in turn freely rotatable on the sh aft Between these fingers 77 are friction clutch operating fingers 80 carried by a cylindrical plane ineniber 81 hub ot the gear disposed coaxial v with 79. These p 80 extend lon Itudiiially in Contact with one set of the fi ction disks 73 and. 7 5. As shown, the opposite end of the shaft 65 is also journaled in a suitable ball bearing 82 carried inthe hub 83 of a section 84, similar to the section 59, and a pintransmissiou 'nafter described, at a ion 85, similar to the pinion 7 9, is keyed to the shaft at a point adjacent'the bearing 82. This pinion, in turn, meshes with'a gear 86 key d to a horizontal longitudinallyextend-- ing shaft 87 journaled in suitable ball bearings 88. The shaft 87 carries on a projecting end a pinion 89 which meshes with an internal gear 90 disposed coaxia ly with the shaft 65. This internal gear 90 is in turn k ed, as at 91, to a horizontally disposed longitudi-. nally extending shaft 92 'jonrnaled within suitable longitudinally spaced roller be rings 93 carried by the feed :fra

and this shaft is disposed coaxially with shaft 95 and in front thereofv Ti lie forward end of the shaft 92 has secured thereto, as by a key, the f ed operating member or chain sprocketS, Thus it will be noted that the rotation of the armature shaft 13 will be transmitted to the pin on 55, gear 56, p on 06 internal gear 67, friction clutch disks 73,

71, shaft (lipi ion 75, clutch member ar 90, and sh :c. l

gear 86, pinion 89, internal go 92, to the feed operating 1r i the latter at a predetermined feed speed whenever the'clutch controlling. member 81 is operated to co i the clutch. It will here further be evident at the speed of feed may be lowered at wiilby sli ping of the friction disks 73, 75. i

Referring specifically to the slow orcutting feed, it will be noted that when the clutch operating member 81 is in 1110] 7Q15tblX 6 posi tion an d the clutch is released, power will still be transmitted to he "interlocking member 78 through the pinion 79 which is freely rotatable on the shaft 65. This pinion, in turn, meshes with a spur gear 9% carried on a shaft 95 similar to the shafts 57 and 8? and journaled within bearings 96 carried within a ring section 9T-sin'1ilar to the ring sections 59 and 8 1, and likewise carried in the bore 60 and spaced from the ring section 59 by means of an intermediate spacing sec tion 98. As illustrated, the hub of the ring section 97 carries a roller bearing-.98 for the shaft 65 and itwill be noted that the shaft 95 carries a pinion 99 meshing with a spur gear 100 keyed to a-sleeve formed on a spur pinion 101 disposed coaxially with the shaft 5 and freely rotatable relative tl ereto and this pinion meshes with spur gear 102 eurnaled on a horizontal longitudinally extending shaft 103 similar to the. shaft 95 and dis posed coaxially therewith. The shaft 103 has secured thereto at its forward end a spur pinion 10 1 which meshes with a large internal gear 105 substantially similar to the internal gear 67. The internal gear 105 a so houses a friction clutchsubstantially similar to the clutch heretofore described in eonneotion.

with clutch disks T3, 7 5 and this clutch includes clutch disks 106 and 10? certain of which are carried on a clutch member 108 keyed, as at 109, to the shaft 95, while others are carried by a sleeve formed on the inter-- nal gear 105. An intermediate member 110 is keyed to the sleeve formed on the pinion 85 and a plane clutch operating member 111 surrounds the hub of the clutch member 110,,

the latter of which in this instance has no in terlocking function and is only a spacing and disk retaining member. A ring. section 112 and a spacing member 113, similar to the spacing member 98,.are disposed between the ring member 97 and the ring member 8 1,

the ring member 112 carrying a ball bearing 11% within which the shaft 05 is further 'ournaied. It will'herein be noted that all of taese ring sections are non-rotatably secured 10 gear 102, pinion 104;, internal gear 105.,

clutch disks 106, 107, clutch member 108,

shaft 65, pinion 85, gear-.86, pinion 89,1internal gear 90,-'and shaft 92 sothat when the clutch 106. 107 is connected the feed operating member 8 will be rotated at a. slow or cuttingspeed in the opposite or reverse direction from the fast speed previouslyide scribed. Here it will also be evident .tliatby slipPingthe friction 106, 10'? this speed may It will herein also be reduced when desired. be understood that 111 my improved constructron the gears 79 and 94f are change speed at. V n31 Us av J 3 in over ant. r'eg rs The e g ns in" lo e 1 l l placed by other sets of gears 3' 9" and 94, (see Fig. the ratio of the gear teeth being so varied that the feed operating member '8 may be rotated at a considerable range of slow or cutting speeds, herein from a feeding speed of approximately 18 inches aminute especially. adapted for hard cutting to a speed of approximately 51 inches a minute especially adapted for soft cutting, and in certain cass even higher or lower speeds may be obfained. It will also be noted that if desired the ratio of the teeth of the gears 101 and 102 may likewise be varied and thespeed furtherclutch shipper members 115 and 116 (see Fig.7

1) provided at one end with suitable rollers 11'? adapted toengage the plane surfaces of the clutch operating members 81 and 111,re'

spectively. The outer ends of these shippers are also provided with rectangular portions 117 and 118 having arcuate engaging sur faces which register with slots i119 and 120,.

respectively, formed in slidably engageable parallel rods 121v and 122 suitably guided in the machine frame at then: opposite. ends.

the feeding;

These rods are grooved or cutaway at 123 and 124 to permit longitudinal relative movement thcrebetween and are provided at theirforward ends with annular seml-clrcular screw l and 128 of opposite pitch and which are adapted to engage a nut 129 having threads of opposite pitch which engage the threads on the members. The nut 129 has secured thereto a grasping or operating portion 130 disposed contiguous to the forward end of the machine frame adjacent the feed operating member 8. It will be observed that by rotatingthe handle 130 and consequently the threaded nut 29 engaging the threads formed on the rods 121 and 122 will cause the latter to simultaneously move in opposite directions and causing one of the friction mechanisms to be released while the other is applied, thereby preventing the simultaneous applications of two feeds, i. e. the fast and slow speeds.

As illustrated, guide soroelzets 33 132, 133,

, and 134 are disposed on vertically disposed parallel axes at the sides of the feed operating member 8 and are adapted to guide't-he feed chain 7 relative to the feed operating member 8 during the'varieus operations of the machine, in .a well known manner.

, lVhile I have in this application specifical- 1 described one embodiment which in r invention may assume in pra .e, itvriil be understood that this form the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without 'dei iarting from ltS'SDlllt or the sco )e of the appended l A A claims. 7

What I claim as new and desire to secure by Letters Patent is:

1; in a minin machine a drivin motor w 7 having a horizontal armature shattextending longitudinally of the machine, and feeding means driven by said motor including a feed operating member adaptedto cooperatewith flexlole feeding means, and a plural speed driving.mechanism therefor having a oriving gear for each speed disposed eoaxially with said armature shaft, said last mentioned gears and all the other gears of said niechanisin being rotatable on axes extending longitudinally of the machine.

In a mining machine, a driving motor having a horizontal armature shaft extending longitudinally of tne machine and disposed in the central longitudinal vertical plane of the latter, and. feeding means'driven by the adjacent end of said motor including a feed o 'iei-ating member adapted to cooperate with flexible'feeding means, and a plural speed driving mechanism therefor, the gears of said mechanism being all disposed on axes parallel to line parallel with said armature shaft 3. In a mining machine, a driving motor having a horizontal armature shaft extending longitudinally of the machine, and feeding means for the machine driven by said motor including a feed operating member operating member. 7

7. In a mining machine, a driving motoradapted to cooperate with flexible feeding means, and a plural speed driving mechanism therefor-including a plurality'of internal gears coaxial with said armature shaft.

4. in a mining machine, a driving motor having a horizontal armature shaft extending longitudinally of the machine,and feed ing means for the machine driven by said motor including a feed operating member adapted to cooperate with flexible 'feeding' plane of the latter, and feeding means forthe machine driven by said motor including a feed opera "i ig member adapted to cooperate with flexible feeding means, and a plural speed driving mechanism including selective- 'ly operable fast and slow speed clutches ar ranged coaxially with said feed operating member, all the driving gearing of said mechanism being arranged on axes parallel to a line parallel with said armature shaft axis.

3. in a mining machine, a driving motor having a horizontal armature shaft extend ing longitudinally of the machine and dis posed in the central longitudinal vertical plane of the latter, and feeding inean's for the machine driven by saidmotor including a feed operating member adapted to cooperate with flexible feeding means, and a plural speed driving mechanism including a plurality of internal gears coaxial with said feed having a horizontal armature shaft extending longitudinally of the machine and disposed in the'central longitudinal vertical plane of the latter,and feeding means for the machine driven by said motor including a feed operating ate with flexible feeding means, and a plural speed driving mechanism including a pluuber adapted to cooper? rality of internal. gears coaxial with said feed J operating member, one speed driving through one of said gears while another speed drives through both of said 8. In a min'ing'machine, a driving motor having a horizontal armature shattextendins lon itudinall i of the machine and feed-,

Q b i ing means for the machine driven by said motor including a feed operating member adapted to cooperate with flexible feeding means and arranged coaxially with said armature shaft, and a plural speed driving mechanism including a plurality of selectively operable fast and slow speed clutches arranged coaxially with said feed ope-rating member, and driving gearing rotatable on axes parallel to aline parallel with said armature shaft axis.

9. In a mining machine, a motor having a horizontal armature shaft extending longitudinally of the machine and disposed in the central longitudinal Vertical plane of the latter, feeding means driven by said motor including a feed operating member adapted to cooperate with flexible feedin means, and feed driving mechanism including change speed gearing having its driving gear coaxial with said armature shaft and its driven gear disposed on a parallel axis, all of the gearing of said driving mechanism being arranged on horizontal axes extending longitudinally of the machine.

10. In a'ininin'g machine, a motor having a horizontal armature shaft extending longitudinally of the machine, feeding mechanism drivenby said motor including a feed operating member adapted'to cooperate with flexible feeding means, and feed driving mecha nism including change speed gearing having its driving gear coaxial with said feed operating member and said armature shaft and its driven gear disposed on a parallel axis,

all of the gearing of said driving mechanism being rotatable on horizontal axes extending longitudinally of the machine.

11. In a mining machine, a motor having a horizontal armature shaft extending longitudinally of the machine, and feeding mechanism driven by said motor including a feed operating member adapted to cooperatewith flexible feeding means and disposed coaxially with said armature shaft, and feed driving mechanism including change speed gearing having its driving gear coaxial with said feed operating member and its driven gear disposed on a parallel axis, all the gearing of said driving mechanism being rotatable on horizontal axes extending longitudinally of the machine,

12. In a mining machine, a motor having ,a horizontal armature shaft extending longitudinally of the machine and disposed in the central longitudinal vertical plane of the lat: ter, and feeding mechanism driven by said motor including a feed operating member adapted tocooperate with flexible feeding means and rotatable on an axis extending longitudinally of the machine,-and feed driving mechanism disposed coaxially with said feed operating member including change speed gearing having its driving gear coaxial with said feed operating member and its driven gear disposed on a parallel axis, all the gearing of saic driving mechanism being rotatable on horizontal axes extending longitudinally of the machine.

13. In amining machine, a driving motor having a horizontal armature shaft extend ing longitudinally of the machine and having means driven by said motor including a being relatively rotatable, and fast and slow speed clutches for selectively connecting said gears in driving relation with said feed operating member. i

1a. In amining machine, a driving motor having a horizontalarmature shaft extend ing lon itudinally of the machine and disposed in the central longitudinal vertical plane of thelatter, and feeding means driven by said motor including a. feed operating meniber adapted to cooperate with flexible feeding means and rotatable on an axis extendinglongitudinally of the machine, and a plural sp ed driving mechanism therefor having a driving gear for each speed arranged coaxial-ly with said feed operating member and fast and slow speed clutches for selectively connecting said'gears in driving relation with said feed operating member.

.15, In mining machine, a driving motor having a horizontal armature shaft extend- 7 ing longitudinally of the machine, and feeding means driven by said motor including'a feed operating member adapted to cooperate with tie 'ible feeding means, and a plural speed driving mechanism therefor having a 16. In a mining machine,-a driving motor having a horizontal armature. shaft extending longitudinally of the-machine" and disposed in the central long tudinal vertical plane of the latter, and feeding means driven by said motor including a feed operating memberadapted to cooperate with flexible feeding means and rotatable on an axis'in a vertical plane extending longitudinally of the machine, and apl'ural speed driving mechanism therefor having a driving gear for each speed fast andslcw speed clutches arranged coaxially with said feed operatingmember for selectively connecting said gears in driving relation with said feed 1 operating member.

17. In a mining machine, a'dr1ving motor having a horizontal armature shaft extending longitudinally of. the machine, and feeding means driven by said motor including a feed 7 operating member adapted to cooperate with flexible feeding means, and a plural speed drivingmechanism therefor having a driving gear for each speed, said gears being arranged on alined axes, and fast andslowf Speed clutches arranged coaxially with said arma tu're shaft for selectively connecting said gears in-driving relation with said feed op crating member. 11 1 18. In amining machine, a driving motor having a horizontal armature shaft extending longitudinally of the machine, and feeding means driven by said motor including a feed operating member adapted to cooperate di rectly with flexible feeding means and arranged coaxially with said shaft, and plural speed driving mechanism therefor including alined driving gears rotatable in opposite directions and fast and slow speed clutches for selectively connecting said gears in driving relation with said feed operating member to drive the latter different speeds in opposite directions. 1 a V I 19. In a mining machine, adriving motor having ahorizontal armature shaft extending longitudinallyof the machine, and feedingmeans driven by said motor including a feed operating member adapted to cooperate directly with flexible feeding-means, and a plural speed driving mechanism therefor ineluding relatively rotatable driving gears arranged coaxially with said shaft and rotatable in'o'pposite directions and fast and slow speed clutches for selectively connecting said gears in driving relation with said feed operating member to drive the latter in opposite directions at different speeds.

' 20. In a mining machine, a driving motor having a horizontal armature shaftextend mg longitudinally of the machine, and feed ing means, driven thereby including a feed operating member adapted to cooperate directly with flexible feeding means and a plural speed driving mechanism therefor including fast and slow speed driving gears rotatableon axes alined with said shaft and rotat-able in opposite directions, all of the gears of said mechanism rotating on axes extending longitudinally of themachine.

21. In a mining machine, a driving motor,

cut-ting mechanism driven thereby, a clutch tatable operating members disposed at opposite sides of the machineand operatively coni nectible directly to said reciprocable element to effect, on rotation, reciprocation of the latter. 7

22. In a m ning machine, a driving motor,

cutting mechanism driven thereby, a clutch interposed between said motor and Lmechanigsm and operable to elfectdriving of the latter, and mechanism for Operating said I clutch compr sing an element bodily reciprocable transversely of the machine and having cam surfaces, and rotatable operating members disposed at opposite sides of the ma chine and one of said operating members engaging one of said cam surfaces.

23. In a mining machine, a driving motor,

cutting mechanism driven thereby, a clutch interposed in the drive between said motor and mechanism including an element coaxial with the axis of said motor, and mechanism for operating said clutch comprising an element bodily reciprocable transversely of the machine, and rotatable operating members disposed on opposite sides of the mach ne and operatively connectible to said reciprocable element to effect, on rotation, reciprocation of the latter.

2a. In a mining machine, a driving motor, cutting mechanism driven thereby, a clutch interposed between said motor and mechanism and operable to effect driving ofthe latter, and mechanism for operating said clutch comprising a rod reciprocable trans versely of the machine and secured at its opposite ends to elements havingcam sur faces, and rotatable operating members disposed at opposite sides of the machine and one of said operating members engaging one of said cam surfaces.

25. In a mining machine, a driving motor having a horizontal armature shaft extend,- ing longitudinally of the machine, cutting mechanism driven thereby, a clutch inter-V posed between said motor and mechanism and operable to effect driving of thelatter, and mechanism for operatingsald clutch comprising a rod reciprocable ,transversely'of said armature shaft, and manually operable rotatable members disposed at opposite sides of the machine and operatively connectible to said reciprocable rod to effect, on rotation, reciprocation of the latter;

26. Ina mining machine, a machine frame,

a driving motor, cutting mechanism driven thereby, a clutch interposed betweensaid motor and mechanism and operable to effect driving of the latter, and mechanism for operating said clutch comprising a rod reciprocable transversely of the mach ne frame, members connected at the opposite ends of said rod and having cam surfaces, and manual operating members rotatably mounted in said frame at oppositesides of the machine and one ofd operating members engaging one of saidcani surfaces. V

27, In a mining machine, a machineframe, a driving motor, cutting mechanism driven thereby, a clutch interposed in the drive between said motor and mechanism including a recip'rocable clutch element coaxial with the motor axis, a shipper yoke cooperating with said element, rod reciprocable' transversely of the machine, members connected to the opposite ends of said rod and having cam surfaces, one of said members being connected to said shipper yoke, and manual operating members rotatably mounted in the machine frame at opposite sides of the machine and one of said operating members engaging one of said cam surfaces.

'28. In a mining machine, a machine frame, a

a driving motor, cutting mechanism driven axial with the axis of anism for operating said clutch including.

thereby, a clutch interposed in the drive between said motor and mechanism including a interposed in the drive between said motor a clutch element coi motor, and mechand mechanism incluu.

cam operated elements reciprocable bodily transversely of the machine and rotatable operating elements disposed at opposite sides of the machine and one of said og ierating elements operatively engaging one of said cam operated elements.

30, In a mining machine, a driving motor, cutting mechanism driven thereby, a. clutch interposed in the drive between said motor and mechanism including a clutch element coaxial with the motor axis, and mechanism operable from either side of the machine for operating said clutch comprising an element bodily reciprocable transversely of the machine and having a cam surface and a manually rotatable element engaging said cam surface and operative on rotation to effect reciprocation of said reciprocable element.

31. In a mining machine, a driving motor, cutting mechanism driven thereby, a clutch interposed in the drive between said motor and mechanismincluding a clutcheiement coaxial with the motor axis, and mechanism operable from'either side of the machine for operating said clutch comprising a bodily recinrocable element, and a manually operable rotatable element operatively connected to said reciprocable element. 1

32. In a mining machine, a; driving motor having a horizontalarmature shaft extending longitudinallyof the machine, and feeding means driven by said motor including a feed operating member adapted to cooperate with flexible feeding means and arranged coaxially with said armature shaft, and plural speed transmission means between said shaft and feed operating member, all of the gears of said transmission means rotating on axes extending longitudinally of the machine.

33. In a mining machine, a driving motor having a horizontal armature shaftcxtending longitudinally of the machine, and feed ing means driven-by said motor including a feed operatmgmember adapted to cooperate with flexible feeding means, and plural speed transmission means between said shaft and feed operating member including last and slow speed controlling clutches arranged c0- axial-1y with said shaft, all'of the gears of 1 means rotating on axesex said t-ransmiss. tending longitudinally of the machine.

34:. In a mining machine, a driving motor having a horizontal armature shaft extending longitudinally of the-machine, cutting mechanism'driven from one end of said shaft 1ncluding a pivoted cutter bar, and feeding means driven from theopposite end of said shaft including a feed operating member adapted to cooperate with flexible feeding means and arranged coaxially with said armature shaft, and plural. speed transmission means between said shaft and said feed operating member.

35. In a mining machine, a driving motor having a horizontal armature shaft extending longitudinally of the machine, cutting mechanism driven'from one end'of said shaft including a pivoted cutter bar, and feeding moans driven from the opposite end of said shaft including a feed operating member adapted to cooperatewith flexible feeding means, and plural speed transmission means between said shaft and saidfeed operating member includingv fast and slow speed clutches arranged coaxially with said shaft.

35. in a mining machine, a driving motor having a horizontal armature shaft extending longitudinally of the machine, cutting mechanism. driven from one end of said shaft including a pivoted cutter bar, and feeding meansdriven from the opposite end of said shaft including a feed operating member adapted to cooperate with flexible feeding means, and plural speed transmission means between said shaft and feed operating member including a fast speed gear train and-a slow speed gear train each mcluding'a gear arranged coaxiallywith said shaft, said gears coaxial with said shaft being relatively rotatable. j

04. In a mining machine, a drlving motor having a horizontal armature shaft extending the machine, and plural speed transmission means between said shaft and said feed operating member for eifectlng rotation thereof at a slow speed in onedirection and at a fast 7 speed in the opposite direction While said shaft rotates continuously in the same'direction and having a gear in each speedarranged coaxially with said shaft, said gears coaxial with said shaft being relatively rotatable. s

38. In a mining machine, a driving'motor having a horizontal armature shaft extending longitudinally of the. machine, and feeding means driven by said motor including a feed operating member adapted to cooperate with flexible feeding means and arranged coaxially with said shaft, and plural speed transmission means between said shaft and said feed operating member, for effecting rotation thereof at a slow speed in one direction and at a fast speed in the opposite direction While said shaft rotates continuously in the same direction.

39. In a miningmaehine, a driving motor having a horizonr .r armature shaft extending longitudinally of the machine, and feeding means driven by said motor including a feed operating member adapted to cooperate with flexible feeding means and rotatable on a horizontal axis extending longitudinally of the machine, and plural speed transmission means between said shaft and said feed operatingmember for elfectingrotation thereof at a slow speed in one direction andat a speed in the opposite direction While said shaft rotates continuously in the same d1rechaving a horizontal armature shaft extending longitudinally.of the machine, and feeding means driven by said motor including a feed operating member adapted to cooperate With lexible feeding means and rotatable on a e machine, and plural speed transmission 1 l etween said shaft and said feed opermember for effecting rotation thereof now speed in one direction and at a fast in the opposite direction While said e r, shaft rotates continuously in the same directior. ineludin a gear in each speed arranged i'xvanially with said shaft, all of the gears of said transmission means rotating on axes exling; longitudinally of the machine. in testimony whereof I affix my signature.

MORRIS P. HOLMES.

orizontal extending longitudinally of 

